#include <stdio.h>
int f(int a);
int main()
{
	int s[8] = {1,2,3,4,5,6},i,d=0;
	for (i=0;f(s[i]) ;i++)
	 d+=s[i];
	 printf("%d\n",d);
	 return 0;
}
int f(int a)
{ 
	return a%2; 
}